Relative Crop

Use Relative Crop to crop or expand an image relative to the image's current dimensions. Image & Video Manager shrinks or expands each of the four sides of the image. It fills the expanded areas with transparency.

If you add the IMQuery transformation to a policy, use the im variable, and select Relative Crop, you can use a query string to crop or expand an image relative to the image's current dimensions. See Syntax and Examples for the syntax for the query string parameter.